Open Modeling Framework - microgridDesign

Model Type Help?

Model Name

User

Created

Run Time

Grid Parameters

Hourly Load Shape (.csv file)Please enter the name of a .csv file representing the hourly load shape.

Choose File

LatitudeSpecify the latitude of the load/grid.

LongitudeSpecify the longitude of the load/grid.

YearSpecify the year to which the load shape values corresond.

Analysis Period (years)Specify the length of financial analysis in years.

Cost of Energy ($/kWh)Specify the energy cost in $/kWh. Format 0.XX

Cost of Demand ($/kW)Specify the demand cost in $/kW. Format 0.XX

Wholesale Price ($/kWh)Specify wholesale price for selling excess electricity back to the grid operator. Format 0.XX

Value of Lost Load ($/kWh)Specify the value of lost load during a power outage in $/kWh.

Use URDB Rate?Utilizing a rate from the Utility Rate Database overrides Cost of Energy and Cost of Demand rates above. See https://openei.org/services/
doc/rest/util_rates/

URDB LabelInput the string found at the end of the URDB Rate URL, For example https://openei.org/apps/
IURDB/rate/view/
5b75cfe95457a3454faf0aea
would yield "5b75cfe95457a3454faf0aea"

O+M Escalation (% per year)Please enter a number 0-1 for the Annual nominal O&M cost escalation rate. Format 0.XXX

Discount Rate (% per year)Please enter a number 0-1 for the Nominal energy offtaker discount rate. In single ownership model the offtaker is also the generation owner. Format 0.XXX

Generation Technologies

SolarInclude solar in the microgrid design?

WindInclude wind in the microgrid design?

BatteryInclude batteries in the microgrid design?

Solar Cost ($/kW)Specify the cost in $/kW.

Solar Minimum Power (kW)Specify the minimum desired generation in kW.

Solar Maximum Power (kW)Specify the maximum desired generation in kW. Leave at default for full optimization on solar power.

Pre-existing Solar Size (kW)Specify the total capacity of any pre-existing solar arrays in kW. The outputted "Total Solar" will be inclusive of existing solar.

Solar power can be curtailed?Allows for excess solar power to be automatically curtailed.

Solar power can be exported?Allows for excess solar power to be sold back to the grid.

Solar MACRS YearsMACRS schedule for financial analysis. Possible inputs are 0, 5 and 7 years. Set to zero to disable accelerated depreciation accounting for solar.

Solar ITC (%)Please enter a number 0-1 for the solar investment tax credit. Format 0.XX

Wind Cost ($/kW)Specify the cost in $/kW.

Wind Minimum Power (kW)Specify the minimum desired generation in kW.

Wind Maximum Power (kW)Specify the maximum desired generation in kW. Leave at default for full optimization on wind power.

Wind MACRS YearsMACRS schedule for financial analysis. Possible inputs are 0, 5 and 7 years. Set to zero to disable accelerated depreciation accounting for solar.

Wind ITC (%)Please enter a number 0-1 for the wind investment tax credit. Format 0.XX

Battery Power Cost ($/kW)Specify the cost in $/kW.

Battery Minimum Power (kW)Specify the minimum desired battery power in kW.

Battery Maximum Power (kW)Specify the maximum desired battery power in kW.

Battery Capacity Cost ($/kWh)Specify the cost in $/kWh.

Battery Minimum Capacity (kWh)Specify the minimum desired battery capacity in kWh.

Battery Maximum Capacity (kWh)Specify the maximum desired battery capacity in kWh.

Battery MACRS YearsMACRS schedule for financial analysis. Possible inputs are 0, 5 and 7 years. Set to zero to disable accelerated depreciation accounting for solar.

Battery ITC (%)Please enter a number 0-1 for the battery investment tax credit. Format 0.XX

Battery Replacement Power Cost ($/kW)Specify the cost of replacing the battery inverter at the specified year in $/kW.

Battery Replacement Capacity Cost ($/kWh)Specify the cost of replacing the battery capacity at the specified year in $/kWh.

Battery Inverter Replacement (years)Specify a year in which the battery inverter will be replaced at the cost specified in Battery Replacement Power Cost. Input is an integer less than or equal to the analysis period in years.

Battery Replacement (years)Specify a year in which the battery cells will be replaced at the cost specified in Battery Replacement Capacity Cost. Input is an integer less than or equal to the analysis period in years.

Resilience - To optimize for resilience, specify an Outage Start Hour greater than 0

Outage Start HourA major outage is added starting at this hour. Specify an hour greater than 0 but less than 8760 to trigger optimization for resilience and include fossil generation. If 0 is entered, the model will run an economic optimization without fossil generation.

Outage Duration (hours)The added major outage is given this duration.

User-supplied Critical Load Shape (.csv)?Check "Yes" if user uploads Optional Critical Load Shape (.csv). Else, indicate "Critical Load Factor"

Optional Critical Load Shape (.csv) Optional: Please enter the name of a .csv file representing the hourly critical load shape. Number of columns much match LoadShape file. Overrides "Critical Load Factor" if present.

Choose File

Critical Load FactorPlease enter a number 0-1 for the fraction of total typical load that must be met during a grid outage. Format 0.XX

Pre-existing Fossil Generator Size (kW)Specify the total capacity of any pre-existing generators in kW. The outputted "Total Fossil Gen" will be inclusive of existing fossil gen.

Available Generator Fuel (gallons)Specify the amount of fuel available for all new and pre-existing generators in gallons.

Minimum Generator LoadingPlease enter a number 0-1 for the the minimum fraction of rated total kVA load that must be maintained by the generator. >/= 0.3 recommended for extended diesel operation. Set to 0 for highest likelihood of success in solving optimization. Format 0.XX

Fossil Generator Cost ($/kW)Specify the cost in $/kWh.

Fossil Generator Min (kW)Specify minimum fossil generation in kW. Only specify if needed, as the optimization runs best if left unedited.

Fossil Generator Max (kW)Specify max fossil generation in kW. Only specify if needed, as the optimization runs best if left unedited.

Fossil Fuel Cost (diesel gal equiv)Specify cost of fuel in $ per gallon. To convert $/MMBTU of Natural gas to gallons of diesel, divide $/MMBTU market rate by 4.85 to account for 50% lower efficiency of natural gas reciprocating engines and lower fuel density as compared to diesel. Format X.XX

Fossil Emissions Factor (lb CO2/gal)Specify fossil emissions factor in pounds of carbon dioxide per gallon. Default 22.4 is for diesel. Natural gas can be modeled using 24.1

Fossil O+M Cost ($/kW/year)Specify annual operations and maintenance cost per kilowatt per year.

Fossil O+M Cost ($/kWh/year)Specify annual operations and maintenance cost per kilowatt-hour per year. Format "X.XX"

Fossil gen only runs during outage?"No" signifies that fossil generator is enabled to run at any point in the year.

Fossil MACRS YearsMACRS schedule for financial analysis. Possible inputs are 0, 5 and 7 years. Set to zero to disable accelerated depreciation accounting for solar.